This is a short summary of the paper
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Plant Breeding
Start of Term Paper
Mankind has selectively bred plants for thousands of years with the
aim of improving their quality. Experimenting with cereal crops, breeders
have aimed to enhance their yield of grain, the quality of their flour, and
their resistance to disea .... Middle of Term Paper
... In 1929 practically no hybrid corn was grown among the 100
million acres of corn in the United States. But by 1970 the vast
majority of 67 million acres was planted with the hybrid variety, yielding
twice as much corn.
Plant breeders have a definite advantage over animal breeders, because
they can often produce fertile varieties - indeed, new species - by
crossbreeding between species. This is because hybrids are often polypoid.
Polyploidy, as we know, can occur naturally in the wild. Some species of
cotton that we grow are polypodies that probably arose originally by
accidental crosses between different species of cotton. ... |
| Number of Words: 622 |
Approximate Pages: 3 |
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